<!DOCTYPE html>
 <html lang="en">
 <head>
 <meta charset="UTF-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=device-width, initi
 al-scale=1.0">
 <title>this绑定规则实验</title>
 </head>
 <body>
 <script>
  function foo() {
 console.log("foo:", this);
 }
 foo();
 var obj = {
 name: "gkd",
 bar: function() {
 console.log("bar:", this);
 }
 };
 var baz = obj.bar;
 baz();
 function test(fn) {/*  */
 fn();
 }
 test(obj.bar);
 "use strict";
 function foo() {
 console.log("foo (strict):", this);
 }
 foo();
   </script>
</body>
</html>